From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Message-ID: <45B5AD79.8020104@st.com> Date: Tue, 23 Jan 2007 12:08:49 +0530 From: Mayank BATRA MIME-Version: 1.0 To: BlueZ development References: In-Reply-To: Subject: Re: [Bluez-devel] hcidump EDR packet type Reply-To: BlueZ development List-Id: BlueZ development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Sender: bluez-devel-bounces@lists.sourceforge.net Errors-To: bluez-devel-bounces@lists.sourceforge.net Hi Quinton, > Wondering someone can help to enlighten me on where hci packet type bit > is reversed for change connection packet type command (issued by > hcitool) for EDR mode, based on the below hcidump, seems 0x2000 is > passed down (which should be 0x1306), however, return message ptype > 0x1306 is correct even decoding is not right. In case you wanted to change the packet type to 3-DH5 0x2000 is perfectly fine since EDR packets are inverted i.e. they will be selected if the corresponding bit is 0 and not 1. Internally, before sending the change connection packet type command all stacks (hopefully BlueZ as well) will xor the packet mask with the EDR packet type list. Thus if you enabled an EDR packet (eg 0x2000 for 3-DH5), the bit for 3-DH5 will be made 0 and bits for remaining EDR packets shall be made 1. 0x1306 means that 3-DH5 and DM1 have been selected on the ACL link which is logical since DM1 is by default selected on all ACL links and you just changed the packet type to 3-DH5. => There is nothing wrong going on except hcidump should be corrected to parse the packet type mask properly. Here it should have shown only DM1 and 3-DH5. Best Regards, Mayank -- Random Quote Follows: "In my opinion, shareware tends to combine the worst of commercial software (no sources) with the worst of free software (no finishing touches). I simply do not believe in the shareware market at all." -- Linus Torvalds ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Bluez-devel mailing list Bluez-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/bluez-devel